Fluctuations, linear response and heat flux of an aging system

Juan Ruben Gomez-Solano; Artyom Petrosyan; Sergio Ciliberto

Fluctuations, linear response and heat flux of an aging system

Juan Ruben Gomez-Solano ¹ Artyom Petrosyan ¹ Sergio Ciliberto ¹

1 Phys-ENS - Laboratoire de Physique de l'ENS Lyon

Abstract : We measure the fluctuations of the position of a Brownian particle confined by an optical trap in an aging gelatin droplet after a fast quench. Its linear response to an external perturbation is also measured. We compute the spontaneous heat flux from the particle to the bath due to the nonequilibrium formation of the gel. We show that the mean heat flux is quantitatively related to the violation of the equilibrium fluctuation-dissipation theorem as a measure of the broken detailed balance during the aging process.

Keywords : colloids gels glass transitions Fluctuatios

Document type :

Journal articles

Domain :

Physics [physics] / Condensed Matter [cond-mat] / Statistical Mechanics [cond-mat.stat-mech]

Complete list of metadatas

https://hal-ens-lyon.archives-ouvertes.fr/ensl-00653786
Contributor : Sergio Ciliberto <>
Submitted on : Thursday, March 1, 2012 - 6:45:25 PM
Last modification on : Thursday, April 19, 2018 - 2:54:03 PM
Long-term archiving on : Thursday, May 31, 2012 - 2:56:07 AM

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Fluctuations, linear response and heat flux of an aging system

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